Juice-straining system for sugar-cane mills



3 19 May 27 w. G. HALL JUICE STRAINING SYSTEM FOR SUGAR CANE MILLS Filed Jan. 29, 1926 gnuentoz M M $4M Patented Ma a, 1927.

TPATENTDFFI 7 :mrcn-srnaimnesrsrnmIron"sueAmcAnnmLLs. i

. invention relates to a juice straining system for sugar object to provide a simple" and effective screeningor straining device associated with the crusher or other equivalent preliminary unit of. the mill, to receive the juice ex pressed by the crusher or similar unit and also to receive the mixed juicefromthe other mill units, the strainer device being associated with a receptacleto receive the juice, from which the same may be pumped directly to the boiling house. The invention. is illustrated in the accompanying drawings, in which:

1 Fig. 1 is adiagrammatic side elevation of a typical sugar cane mill provided with a preliminary crusher, with which the strainer device is associated.

f Fig. 2 isa fragmentary side. elevation 2 showing a modification of the, strainer device.

Referring to Fig. 1 of the drawings, 1

indicates a typical crusher through which the cane is passed and by means of which a large percentage of the juice is immediatelyexpressed. Said crusher is connected 1 bya chute 2 with the first roller unit 10 of the mill. As illustrated, there are four roller units 10, 10', 10 and 10 each suc-' cessively connected by intermediate conveyers 20, 20, and 20 said intermediate conveyers'serving to pass the bagasse from one mill to the next. Juice pans 11, 11, 11 and 11 are disposed below each offthe' correing connected by discharge pipes 12 and 12' with a pump 13, the discharge of which is connected by a pipe 14 adapted to deliver the mixed juice from the several mills to the strainer device, as will be hereinafter 4G explained. The pans 11 andl'l are connected by pipes 12 and 12, respectively, to

pump 13, which is provided with two dis charge pipes 14; and 1 1 the former deliverthe third mill 3 ing the juice expressed by unit 10' to a distributor 15 disposed above the intermediate conveyer 20 between the first and second mill units, the juice so delivered being then distributed over the bagasse on the conveyor and serving as macer- 5 ation. The discharge pipe 14 delivers the juice expressed by the final unit 10 of the mill and the maceration water delivered by pipe 25 to the bagasse on the intermediate conveyer 20 cane mills and has for its to a distributor 15' 10-- 5 cated above the intermediate conveyer 20 between the second and third roller units, the

p Application filed mew 29,1926. s riai no. 84,659.

By this distributing arrangement, all of the mixedjuice from the several rollerunits is ultlmately delivered l-to the pump 13'- and forced by the latter through pipe, 1 1 tothe strainer device.

WILLIAM G. Harmon fionorupQyrrirtmrbnYpr nAwA ir. i

mixture of juice and waterjser-ving as macer l at on for the bagassebnlsald conveyer 20.

Located below and partially surrounding the lower roller of the crusher 1 'is a receptacle 30 into which the large proportion "of the juice expressed by the crusher passes directly, running'down over the'front of said roller, while the crushed cane passes down theinciine'dbottom 2 of the chute 2. The receptacle 30 is provided with a hopper-like bottom, above which is located one or more screens or strainers 31, which extend entlrely across the receptacle, and are prefer ably providedwith means for oscillating: themto cause any solid material lodging upon them to be moved forward and dischargedover the front edges of the screens into the chute 2. To facilitate the discharge i of the solid material lodging on the screens,

the latter are preferably inclined toward the chute. The discharge pipe llfIODfl the pump13 is connected to' the. receptacle 30 above the screens '31, therein and serves to deliver the mixed juices from "the roller mill units above the screens, so that the mixed ulce from the several rollerunits and the body of juice discharged from the receptacle 30 by pipe 32 to the boiling house,

while thecush cush carried by the mixed juice from the several roller un'itsand the strainer comprises-a casing 30' arranged be- 1 lowjthe crusher and the chute 2 and is provided with a fixedscreen 31 located above the hopper-like bottomof the receptacle 30,

juice expressed by the crusher is effectively stralned by the screens 31 and the entire sponding mill units, the pans 11 and 11' be-' are passed through the several roller with an endless chain scraper 33 arranged above the screen, the slats or blades of the scraper engaging the upper surface of the screen and serving toscrape any cush cush or'broken cane that may belodged uponthe screen o'fi' of'tlie latter and intothe chute 2. The chain scraper may be operated by a suitable connection with any of the rotary units of theniill,-as Will'be understood;

The discharge pipeil l fromvthe pump 13 de-.

livers all of the mix'e'd'jui'ce' from the roller units of the mill to thelrekgeptacleBO above 7 i the screen 81, so that the juice expressed by the crusher -1 andt-he mixed juice'from the other mill units is effectively strained and all foreign material removed therefrom by the screen 31 and, is ready r01 immediate sections, zustrained juice/discharge for the lower section, means for delivering the mixedjuice from the roller mill units to the upper section, and iii e-ans fer discharging the solid material lodging on the screen into a the chute.

including a preliminary crusher: and a chute 'GOIlX lfGCtiQgfltl -IG crusherv -with f t l efirst-mill unit, a chamber below, the crusher and. offset from the bottom -of. the cliut'e,la screen" dividng-sa d chamber mtognpper and lo ver sec- .H v J v tions,; a strained u ce. dlS Cl1fl1TgG3iOl' tlae lower-section, means for deliverlng the; m xed juice from the roller mill units to thelnpper section, anda scraper engaging thesereen for dischargmggthe solid material lodg ng thereon into the chute.

ture.

WILiJ'rAM eLH AL I 2. The combination of a sugar cane mill,

In testimony .-vvl1ereof I afiilxi mysign'a- 

